... sand filters, main purpose is to remove the water contains sediment, manganese, rust, colloid material, ... than 0.05mg / L, SDI less than or equal to 5. Water filter is a kind of ... adsorption of residual chlorine in the water, using water more than less than or equal to ... water and the expecting water quality. We will get back to you within 12 hours! cosmetics water treatments, water purification machine ...